Seasonal variation of Zygochlamys patagonica muscular and gonadal indices in relation to energy reserves storage

Authors

  • Silvana Campodónico Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
  • Griselda Garaffo Instituto de Investigaciones Marinas y Costeras (IIMyC) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

Keywords:

Zygochlamys patagonica, proximate composition, condition, reproduction, pectinids, energy reserves

Abstract

Patagonian scallop (Zygochlamys patagonica) is a commercially important fishery resource in Argentina. The species has a seasonal variation in the weight of the adductor muscle and the gonad in relation to the breeding season. Spawning of Z. patagonica occurs from early Spring to early Fall. The energy used for the production of gametes would come from either recently eaten food or previously stored as biochemical reserves. In this paper, the variations of muscular and gonadal relative condition indices (ICRM and ICRG) in relation to the reproductive cycle and energy reserves are analyzed. The ICRG and ICRM show an inverse behaviour; the first increase in Winter and decrease in Summer. Glycogen, the muscle biochemical component that presents the largest variation throughout the year, registers the lowest percentages in Winter that increase towards Summer. This would indicate a transfer of glycogen from the callus to other parts of the body (gonad). Therefore, sexual cells maturation process would occur at the expense of the energy contributed by the adductor muscle.

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Published

2014-09-01

How to Cite

1.
Campodónico S, Garaffo G. Seasonal variation of Zygochlamys patagonica muscular and gonadal indices in relation to energy reserves storage. Mar Fish Sci [Internet]. 2014Sep.1 [cited 2021Sep.20];24:75-86. Available from: https://ojs.inidep.edu.ar/index.php/mafis/article/view/82